SF1608PTH Equivalent & Substitute Parts

Part Overview

The SF1608PTH is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 600 V DC reverse voltage and 16 A average rectified current in a through-hole TO-247AD (TO-3P) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. The device features fast recovery characteristics with a 35 ns reverse recovery time and is qualified to AEC-Q101 automotive standards.

Substiute Parts

SF1608PTH

Taiwan Semiconductor CorporationIn Stock: 943SF1608PTH Datasheet

Current PartRFQ

SF1608PT C0G

Taiwan Semiconductor CorporationIn Stock: 962SF1608PT C0G Datasheet

Parametric EquivalentRFQ

STTH31AC06SWL

STMicroelectronicsIn Stock: 2640STTH31AC06SWL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SF1608PTH is determined by the following critical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 600 V
• Package / Case: TO-247-3
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Current - Average Rectified (Io): Equal or greater than 16 A
• Reverse Recovery Time (trr): Equal or less than 35 ns
• Operating Temperature - Junction: Must encompass or exceed -55°C ~ 150°C range
• Forward Voltage (Vf): Acceptable within typical rectifier diode specifications

Substitute parts are grouped into two categories: parametric equivalents (identical electrical and mechanical specifications) and similar parts (matching core voltage and package requirements with enhanced current ratings).

Parameter Comparison

Engineering Selection Recommendations

SF1608PT C0G (Parametric Equivalent)

The SF1608PT C0G is a direct parametric equivalent to the SF1608PTH, manufactured by Taiwan Semiconductor Corporation. This part maintains identical electrical specifications including 600 V reverse voltage, 16 A average rectified current, 1.7 V forward voltage at 8 A, and 35 ns reverse recovery time. The device is housed in the same TO-247-3 through-hole package and operates across the identical temperature range of -55°C to 150°C. Critically, the SF1608PT C0G holds active product status with 926 pieces in stock, providing immediate availability. Both parts are ROHS3 compliant and carry equivalent compliance certifications. This part is the primary replacement for discontinued SF1608PTH applications.

STTH31AC06SWL (Similar Substitute)

The STTH31AC06SWL, manufactured by STMicroelectronics, is a similar substitute that matches the 600 V reverse voltage rating and TO-247-3 through-hole package configuration. This device provides enhanced current capacity at 30 A average rectified current, compared to the 16 A rating of the SF1608PTH. The STTH31AC06SWL exhibits a higher reverse recovery time of 65 ns relative to the 35 ns specification of the original part, and forward voltage of 2 V at 30 A. The operating temperature range extends to -40°C to 175°C, providing broader thermal coverage. This part is suitable for applications where increased current headroom is beneficial and the extended reverse recovery time does not compromise circuit performance. The STTH31AC06SWL is active with 2600 pieces in stock and is ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can SF1608PT C0G be used as a direct replacement for SF1608PTH?

A: Yes. The SF1608PT C0G is a parametric equivalent with identical voltage, current, and thermal specifications. Both parts are rated for 600 V, 16 A, and operate from -55°C to 150°C. The TO-247-3 package and through-hole mounting are identical. The primary difference is product status: SF1608PT C0G is active with available inventory.

Q: What are the limitations of using STTH31AC06SWL as a substitute?

A: The STTH31AC06SWL has a reverse recovery time of 65 ns compared to 35 ns for the SF1608PTH. In applications sensitive to switching speed or electromagnetic interference, this extended recovery time may affect circuit behavior. The forward voltage is also higher at 2 V versus 1.7 V. However, the 30 A current rating provides margin above the 16 A requirement. Circuit-level analysis is necessary to confirm suitability in specific applications.

Q: Are all substitute parts automotive qualified?

A: The SF1608PTH and SF1608PT C0G both carry AEC-Q101 automotive qualification. The STTH31AC06SWL is not specified with automotive qualification in the provided data. Applications requiring automotive-grade components should prioritize the SF1608PT C0G.

Q: Do the substitute parts have the same package dimensions?

A: All three parts use the TO-247-3 through-hole package. Physical dimensions and PCB footprints are compatible. Thermal management characteristics may differ due to variations in die size and internal construction, but mechanical mounting is identical.

Q: What is the inventory status of each part?

A: SF1608PTH is discontinued at DiGi Electronics. SF1608PT C0G has 926 pieces in stock. STTH31AC06SWL has 2600 pieces in stock. Both active alternatives provide immediate availability.

Q: Are all parts RoHS compliant?

A: Yes. SF1608PTH, SF1608PT C0G, and STTH31AC06SWL are all ROHS3 compliant. All parts are REACH unaffected and classified as EAR99 for export control purposes.